body {
  margin: 0;
  padding: 0;
}
body ul {
  padding: 0;
  margin: 0;
}

::placeholder {
  color: red;
}

#box {
  width: 580px;
  height: 340px;
  background: pink;
  background-size: center;
  background: url("../../img/摄影网-北京夜景（非企业商用）.jpg");
}

#nox {
  width: 280px;
  height: 300px;
  background: url("../../img/webcxsdf.jpg");
}
